Greek word
epangéllō
ἐπαγγέλλω
What it means
to announce upon, i.e. to engage to do something, to assert something respecting oneself
to announce upon (reflexively), i.e. (by implication) to engage to do something, to assert something respecting oneself
Where it comes from
from epí (ἐπί) and the base of ángelos (ἄγγελος)